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Earth Day is celebrated on the 22nd of April every year as a day dedicated to honor the role of mother earth and nature in our life and existence. Earth day gives us all an opportunity to create awareness and means to protect nature and earth from disaster and environmental problems it is facing these days.

Common Earth day activities include Earth day quizzes for kids in schools, planting trees, participating in awareness rallies, Earth Day games & other activities, wishing Earth day via Earth Day images and spreading awareness through Earth Day 2016 posters.

Which automobile pollution control technology became universally adopted following the Clean Air Act Extension of 1970?

Catalytic converters

Evaporative emissions control

Exhaust gas recirculation (EGR)

Secondary air injection

What year did the United States EPA declared greenhouse gasses a threat to public health?

2009

1994

1972

1985

What international agreement set the groundwork for phasing out chlorofluorocarbons (CFCs) and other substances known to deplete the ozone layer?

EMEP Protocol

Geneva Protocol

Montreal Protocol

Multi-effect Protocol

The Stockholm Convention of 2001 aimed to reduce what chemical substances that are known to bio-accumulate and pose a risk to human health?

Mercury compounds

Persistent organic pollutants (POPs)

Carbon dioxide derivatives

Nuclear byproducts

With over 1.2 million people displaced, 13 cities flooded, submersion of polluted factories, and location on top of geologic fault lines, what is widely thought to be the most environmentally destructive dam project of all time?